How long does it really take for hens to accept another hen back into the flock? Are my hens just mean? I have two hens with chicks right now. Well, as of today, 3. One (an Australorp) has chicks that are 4 weeks old, the other's (a Buff Orpington) are 3 weeks old. The Australorp, after hatching her chicks, spent a few nights outside, and then moved them all into the henhouse into a nest box for the night. The other hens are fine with her. The Buff Orpington has not been allowed, and gets picked on constantly, and has been forced to nest with her chicks outside. Both hens started brooding in nest boxes, then were moved to a "maternity ward", and then let out once the chicks hatched so they could raise them naturally. Why have they accepted the Australorp but not the Orpington? They were all raised together from hatchlings, they should all know each other, so I really don't get it. I did worry about separating them to brood, but figured I would give it a try because so many people recommended doing it. I decided never to separate a broody again because of this. I have two new ones brooding right now, and they were both left in with everyone else.